EBF,
I have not heard or seen any evidence of weak axis fracture with pre-Northridge MF connection (evaluated nearly 50 SMF buildings). I have utilized same in many structures since Northridge. After Northridge event, many things were thrown against the wall as causes or problems and many are...
I have not utilized this program, but have reviewed output for sample calculations. A note of caution is that stresses do not normally govern for RBS systems in higher seismic zones such as California while drift governs. The Ieff for the RBS is not calculated in this output but should be...